John Calvin Reformed @genevareformer

9. For this is a rebellious people. The word for or because points to the explanation of what has been already said; for the Prophet explains what the Lord intends to declare to posterity, namely, that the perverseness of this nation is desperate, because they cannot submit to be restrained by any doctrine.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. The preface is very awful. The prophet must not only preach this, but he must write it (Isa 30:8), write it in a table, to be hung up and exposed to public view; he must carefully note it, not in loose papers which might be lost or torn, but in a book, to be preserved for posterity, in perpetuam rei memoriam - for...

Commenting on Isaiah 30:8-17

John Gill Reformed Baptist @doctorgill

That this is a rebellious people,.... This, with what follows, is what the Lord would have written and engrossed, and remain for ever; or this is a reason why he would have it, for so the words be rendered, "for", or "because, this is a rebellious people (l)"; rebellious against God and his commands; they are called "rebellious children" before, Isa 30:1 and, as it...